Trigger-type liquid dispenser

Abstract

To maintain for a long period the strength of a forward energization force to be added to a trigger part which is moved backward.SOLUTION: An ejector body 2 includes: a vertical supply cylinder part 10 for sucking up liquid in a container body; and a trigger mechanism 20 having a trigger part 21 arranged so as to be moved backward, and circulating liquid from the vertical supply cylinder part to an ejection port 4 side due to backward movement of the trigger part. An energization member 5 for energizing forward the trigger part which is moved backward is provided. The energization member has main spring members 15 disposed on both sides clipping the ejector body in the left-right direction, and an auxiliary spring member 16 disposed in the trigger part. When the trigger part is moved backward, the main spring member is elastically deformed, and the auxiliary spring member contacts the main spring member and is elastically deformed.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a trigger-type liquid ejector.

Background Art

[0002] Conventionally, as shown in Patent Document 1 below, for example, a trigger-type liquid ejector that sucks up a liquid from inside a container body by the forward and backward movement of a trigger part and ejects the liquid through an ejection hole is known. Generally, a trigger-type liquid ejector includes a biasing member that biases the trigger part moved backward forward.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, in trigger-type liquid ejectors, in consideration of environmental problems, weight reduction may be achieved, or they may be repeatedly used by replacing the liquid in the container body, and it is required to maintain the magnitude of the forward biasing force applied to the trigger part moved backward over a long period of time.

[0005] The present invention provides a trigger-type liquid ejector capable of maintaining the magnitude of the forward biasing force applied to the trigger part moved backward over a long period of time.

Means for Solving the Problems

[0006] A trigger-type liquid dispenser according to one aspect of the present invention comprises a dispenser body attached to a container body containing liquid, and a nozzle member attached to the dispenser body and having a discharge hole formed therein for discharging liquid, wherein the dispenser body has a vertical supply cylinder portion for drawing up liquid from the container body and a trigger portion disposed to be movable to the rear, and a trigger mechanism that causes the liquid to flow from the vertical supply cylinder portion toward the discharge hole when the trigger portion moves toward the rear, and a biasing member is provided to bias the trigger portion that has moved toward the rear toward the front, wherein the biasing member comprises main spring members provided on both sides that sandwich the dispenser body in the left-right direction and an auxiliary spring member provided on the trigger portion, wherein when the trigger portion moves toward the rear, the main spring members are elastically deformed and the auxiliary spring members abut against the main spring members and are elastically deformed.

[0007] The biasing member that biases the rearward-moved trigger forward includes a main spring member and an auxiliary spring member. Therefore, when the trigger is pulled rearward, both the main spring member and the auxiliary spring member undergo elastic deformation, and when the pull on the trigger is released, a forward biasing force is applied to the trigger from both the main spring member and the auxiliary spring member. When the trigger is pulled backward, the auxiliary spring member comes into contact with the main spring member and undergoes elastic deformation. When the pull on the trigger is released, the main spring member and the auxiliary spring member suppress each other's restorative deformation, amplifying the forward biasing force applied to the trigger. As described above, even without placing a large load on the main spring member, it becomes possible to reliably apply a forward biasing force to the trigger when the tension on the trigger is released, and the magnitude of the forward biasing force applied to the rearward-moving trigger can be maintained over a long period of time. By providing an auxiliary spring member, even if the main spring member is made lighter and smaller than conventional models, it is easy to secure a forward biasing force that can properly return the trigger to its front end position.

[0008] The auxiliary spring member may have one end, either its upper or lower end, connected to the trigger portion, and when the trigger portion moves backward, the auxiliary spring member may come into contact with the main spring member and deform forward around the one end.

[0009] When the trigger section moves backward, the auxiliary spring member comes into contact with the main spring member and deforms forward around one end, thereby allowing the trigger section to move smoothly backward while both the main spring member and the auxiliary spring member undergo elastic deformation.

[0010] When the trigger portion moves backward, the main spring member may slide against the auxiliary spring member while undergoing elastic deformation.

[0011] As the trigger unit moves backward, the main spring member slides against the auxiliary spring member while undergoing elastic deformation. This makes it easy to obtain a configuration in which the auxiliary spring member contacts and elastically deforms the main spring member when the trigger unit moves backward.

[0012] The auxiliary spring member may only undergo elastic deformation when the trigger portion moves backward.

[0013] Since the auxiliary spring member only elastically deforms when the trigger part moves backward, it is possible to prevent the pulling force applied to the trigger part when moving it backward from becoming excessively large.

[0014] The ejector body comprises an injection cylinder portion extending forward from the vertical supply cylinder portion, and a pressure accumulator member disposed within the injection cylinder portion so as to be movable back and forth, and blocking communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion. The pressure accumulator member is provided with a resin elastic body that moves backward when the pressure in the injection cylinder portion rises, thereby connecting the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, and biasing the backward-moving pressure accumulator member forward. The elastic body and the main spring member may be formed integrally.

[0015] Since a pressure accumulator and an elastic body are provided, when the pressure inside the injection cylinder exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply cylinder and the ejection hole through the injection cylinder, allowing the liquid to be ejected stably in the desired manner. Since the pressure accumulator is located inside the injection cylinder, the nozzle can be made smaller and the structure can be simplified compared to when the pressure accumulator is located inside the nozzle. Because the pressure accumulation member is located inside the injection cylinder, the internal volume of the injection cylinder can be reduced without increasing the number of parts. This allows the pressure inside the injection cylinder to increase quickly when the trigger is operated, thus reducing the number of priming cycles. Furthermore, because the internal volume of the injection cylinder is reduced, less air remains inside, which can suppress variations in the amount of liquid ejected and dripping from the nozzle caused by residual air. Since the elastic body and the main spring member are formed integrally, the increase in the number of parts can be suppressed. [Effects of the Invention]

[0016] According to one aspect of the present invention, the magnitude of the forward biasing force applied to the rearward-moving trigger can be maintained over a long period of time. [Brief explanation of the drawing]

[0017] [Figure 1] This is a longitudinal cross-sectional view of a trigger-type liquid dispenser shown as one embodiment. [Figure 2] Figure 1 is a perspective view of the trigger-type liquid dispenser, including a partial cross-section viewed from the front at an oblique angle. [Figure 3] This is an enlarged view of a portion of Figure 2, seen from the left and right directions. [Figure 4] Figure 3 shows the trigger unit in a rearward position. [Modes for carrying out the invention]

[0018] Hereinafter, with reference to the drawings, a trigger-type liquid ejector according to an embodiment of the present invention will be described. As shown in FIG. 1, the trigger-type liquid ejector 1 according to the present embodiment includes an ejector body 2 attached to a container body A for storing a liquid, a nozzle member 3 formed with an ejection hole 4 for ejecting the liquid, and attached to the ejector body 2, and a biasing member 5. Examples of the liquid stored in the container body A include detergents for housing and tableware, deodorant and fragrance agents used for spaces and clothes, and antibacterial alcohol. In addition, each component of the trigger-type liquid ejector 1 is, unless otherwise specified, a molded product using synthetic resins such as olefin resins such as polypropylene (PP) and polyethylene (PE), polyacetal (POM), or polyketone (POK).

[0019] The ejector body 2 mainly includes a vertical supply cylinder portion 10, a trigger mechanism 20, an injection cylinder portion 30, a switching valve 40, and a pressure accumulation member 31.

[0020] In the following description, the side of the container body A along the central axis O of the vertical supply cylinder portion 10 is referred to as the lower side, the opposite side is referred to as the upper side, and the direction along the central axis O is referred to as the vertical direction. The direction intersecting the central axis O when viewed from the vertical direction is referred to as the radial direction, and the direction orbiting around the central axis O when viewed from the vertical direction is referred to as the circumferential direction. Among the radial directions, the side where the nozzle member 3 is provided with respect to the ejector body 2 is referred to as the front side, and the opposite side is referred to as the rear side. Among the radial directions, the direction orthogonal to the front-rear direction is referred to as the left-right direction.

[0021] The vertical supply cylinder portion 10 is formed in a toped cylindrical shape extending in the vertical direction and sucks up the liquid in the container body A. The vertical supply cylinder portion 10 includes a flange 11 disposed on the upper end opening edge of the mouth portion of the container body A via a packing. The flange 11 is pressed from above by a cap 12 attached (screwed) to the mouth portion of the container body A. The upper portion of a pipe 13 extending in the vertical direction and sucking up the liquid from the container body A is fitted into the vertical supply cylinder portion 10. A cylinder section 14 is provided on the front side of the vertical supply section 10. The cylinder section 14 protrudes forward from the vertical supply section 10 and is open to the front.

[0022] The trigger mechanism 20 comprises a trigger section 21, a piston 22, and a cylinder 23. The trigger mechanism 20 causes the liquid to flow from inside the vertical supply cylinder 10 toward the ejection hole 4 by the rearward movement of the trigger section 21.

[0023] The cylinder 23 is fitted and fixed within the cylinder section 14. The cylinder 23 is formed in a bottomed cylindrical shape, opening at the front and closed at the rear. A transverse passage 18 is formed in the rear wall of the cylinder 23, connecting the inside of the cylinder 23 and the inside of the upper end of the vertical supply section 10 in the front-rear direction. The trigger section 21 is positioned in front of the vertical supply cylinder section 10 and is movable backward. The trigger section 21 extends downward from both sides that sandwich the connection between the injection cylinder section 30 and the nozzle member 3 in the left-right direction, and straddles the front of the piston 22 and cylinder 23 in the vertical direction. The upper end of the trigger section 21 is supported so as to be rotatable about an axis that extends in the left-right direction. The piston 22 is fitted into the cylinder 23 so as to be movable back and forth. The piston 22 moves in the back and forth direction in conjunction with the back and forth movement of the trigger portion 21. The inside of the cylinder 23 is pressurized and depressurized as the piston 22 moves back and forth. The piston 22 is formed in a top-closed cylindrical shape that is open at the rear and closed at the front. The front end of the piston 22 is connected to the rear end of the trigger section 21. As the trigger section 21 moves backward, the piston 22 retracts and is pushed into the cylinder 23.

[0024] The injection cylinder section 30 is positioned above the cylinder section 14 and extends forward from the upper end of the vertical supply cylinder section 10. The injection cylinder section 30 is integrally formed with the top wall 43 of the vertical supply cylinder section 10. A vertical communication passage 19 is formed at the connection point between the injection cylinder section 30 and the top wall 43 of the vertical supply cylinder section 10, connecting the inside of the injection cylinder section 30 and the inside of the upper end of the vertical supply cylinder section 10 in the vertical direction.

[0025] The pressure accumulator 31 is disposed within the injection cylinder 30 so as to be movable back and forth, and blocks communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30. The pressure accumulator 31 is formed in the shape of a rod extending in the front-rear direction and abuts against the inner circumferential surface of the injection cylinder 30 in the front-rear direction, thereby blocking communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30. When the pressure inside the injection cylinder 30 rises, the pressure accumulator 31 moves backward, allowing communication between the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30.

[0026] The switching valve 40 is located inside the vertical supply cylinder 10. The switching valve 40 switches the communication between the inside of the vertical supply cylinder 10 and the inside of the container A via the horizontal communication passage 18 and the inside of the cylinder 23, and shuts it off, in response to the pressurization and depressurization inside the cylinder 23. The switching valve 40 is a ball valve and is made of a material that is heavier than the liquid inside the container A, for example. The switching valve 40 is positioned on a valve seat 41 formed on the inner circumferential surface of the vertical supply cylinder 10 so as to be able to move away from it upward. The valve seat 41 is formed in an annular shape and is arranged coaxially with the central axis O. The valve seat 41 extends downward from the inner circumferential surface of the vertical supply cylinder 10 radially inward. The switching valve 40 and the valve seat 41 are located below the horizontal communication passage 18.

[0027] In the illustrated example, multiple elastic protrusions 44 projecting downward are formed on the lower surface of the top wall 43 of the vertical supply cylinder portion 10. Multiple elastic protrusions 44 are provided spaced apart in the circumferential direction. When the switching valve 40 moves upward away from the valve seat 41, the multiple elastic protrusions 44 are elastically deformed radially outward, expanding the space surrounded by the multiple elastic protrusions 44.

[0028] The nozzle member 3 comprises a relay member 3a attached to the front end of the injection cylinder portion 30, and a nozzle body 3b that is rotatably mounted to the relay member 3a while being prevented from coming off forward. The intermediate member 3a is formed in a cylindrical shape that extends in the front-rear direction. The front part of the injection cylinder 30 is fitted inside the rear part of the intermediate member 3a. The front part of the intermediate member 3a protrudes forward from the injection cylinder 30. The nozzle body 3b is formed in a closed-end cylindrical shape. An ejection hole 4 is formed at the front end of the nozzle body 3b, which ejects liquid forward.

[0029] The biasing member 5 biases the rearward-moved trigger portion 21 forward. As shown in Figures 2 and 3, the biasing member 5 comprises a main spring member 15 and an auxiliary spring member 16. The main spring member 15 and the auxiliary spring member 16 are made of synthetic resin.

[0030] The main spring members 15 are provided on both sides of the ejector body 2, sandwiching it in the left-right direction. The main spring members 15 elastically deform when the trigger portion 21 moves backward. The main spring members 15 bias the trigger portion 21 forward even before the trigger portion 21 moves backward. Furthermore, the main spring member 15 may elastically deform only when the trigger portion 21 moves backward, thereby biasing the trigger portion 21 forward.

[0031] The main spring member 15 is formed in a plate shape that extends in the front-rear direction and has its front and back surfaces facing left-right. The front end of the main spring member 15 abuts against the trigger portion 21 from behind the trigger portion 21. The front end of the main spring member 15 abuts against both left-right ends of the rear surface 21b of the trigger portion 21, which faces backward. The connecting portion 15b of the upper end surface 15c facing upward and the front end surface 15d facing forward of the main spring member 15 abuts against the trigger portion 21.

[0032] The rear portion of the main spring member 15 extends straight in the front-rear direction. The front portion of the main spring member 15 extends downward as it moves forward. In the main spring member 15, the connection portion 15a between the rear and front portions is curved so as to protrude upward when viewed from the left and right directions. The main spring member 15 is located below the upper end surface of the ejector body 2. The front end surface 15d of the main spring member 15 faces diagonally downward towards the front. The upper end surface 15c of the front portion of the main spring member 15 faces diagonally forward towards the upward. When the trigger section 21 moves backward, the front part of the main spring member 15 deforms backward around the connection section 15a.

[0033] The auxiliary spring member 16 is provided on the trigger portion 21. The auxiliary spring member 16 elastically deforms when it comes into contact with the main spring member 15 when the trigger portion 21 moves backward. The auxiliary spring member 16 elastically deforms only when the trigger portion 21 moves backward. The auxiliary spring member 16 is not elastically deformed before the trigger portion 21 moves backward. Furthermore, the auxiliary spring member 16 may be in contact with the main spring member 15 and elastically deformed even before the trigger portion 21 moves backward.

[0034] The auxiliary spring member 16 is formed in a plate shape with its front and back surfaces facing in the front-rear direction, and one of its ends, either the upper or lower end, is connected to the trigger portion 21. The auxiliary spring member 16 and the main spring member 15 are provided with their respective front and back surfaces facing in directions that intersect each other. The length of the auxiliary spring member 16 is shorter than the length of the front part of the main spring member 15. When the trigger portion 21 moves backward, as shown in Figure 4, the auxiliary spring member 16 comes into contact with the main spring member 15 and deforms forward around one end. At this time, the main spring member 15 slides against the auxiliary spring member 16 while undergoing elastic deformation.

[0035] Here, through holes 21a extending in the front-to-back direction are formed separately at both ends of the trigger portion 21 in the left-to-right direction. The auxiliary spring member 16 is provided inside the through holes 21a. In this embodiment, the lower end of the auxiliary spring member 16 is connected to the inner circumferential surface of the through hole 21a. Alternatively, the upper end of the auxiliary spring member 16 may be connected to the inner circumferential surface of the through hole 21a.

[0036] The front surface of the auxiliary spring member 16, facing forward, extends in a direction away from the rear surface 21b of the trigger portion 21 as it moves upward when viewed from the left and right directions, as shown in Figure 3. The upper end of the auxiliary spring member 16 is located below the upper end of the through hole 21a. The upper end of the auxiliary spring member 16 is located behind the upper end of the through hole 21a. The connecting portion 15b of the main spring member 15 abuts against the upper end of the opening periphery of the through hole 21a on the rear surface 21b of the trigger portion 21.

[0037] The upper end of the auxiliary spring member 16 is in contact with or close to the front end surface 15d of the main spring member 15. The upper end of the rear surface 16a of the auxiliary spring member 16, which faces backward, and the front end surface 15d of the main spring member 15 form an acute angle when viewed from the left and right directions. The upper end of the rear surface 16a of the auxiliary spring member 16 extends in a direction in which the thickness of the auxiliary spring member 16 decreases as it goes upward. The upper end of the rear surface 16a of the auxiliary spring member 16 exhibits a curved shape that protrudes backward when viewed from the left and right directions. The upper end of the auxiliary spring member 16 is located in front of the connection portion between the trigger portion 21 and the piston 22, and at the same position in the vertical direction.

[0038] The rear ends of a pair of main spring members 15 are connected in the left-right direction by a closing portion 35. The closing portion 35 is formed in the shape of a bottomed cylinder that opens forward and is closed at the rear. The vertical centers of the closing portion 35 and the rear ends of the main spring members 15 coincide with each other. The closing portion 35 is fitted into the rear end of the injection cylinder 30 and closes the rear end opening of the injection cylinder 30. An elastic resin body 33 is provided at the rear end of the closing portion 35, which protrudes forward and biases the rearward-moving pressure accumulation member 31 forward. The elastic resin body 33, the closing portion 35, and the main spring members 15 are integrally formed from the same material (for example, an olefin resin such as polypropylene (PP), polyacetal (POM), or polyketone (POK)).

[0039] The front end of the elastic body 33 is in contact with the rear end of the pressure accumulator 31. When the pressure inside the rear end of the injection cylinder 30, where the vertical passage 19 opens, exceeds a predetermined value, the pressure accumulator 31 moves backward while elastically deforming the elastic body 33, thereby creating communication between the inside of the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30.

[0040] A hook portion 34 is formed on the lower end surface of the rear of the main spring member 15, projecting downward and extending in the front-rear direction. The hook portion 34 is formed in a plate shape with its front and back surfaces facing left and right. A claw portion 36 is formed on the front end of the hook portion 34, projecting downward. Of the claw portion 36, the rear edge facing rear extends straight in the vertical direction, while the front edge 36b facing forward extends backward as it goes downward. The hook portion 34 is locked into a locking groove 2a provided on the outer surface of the ejector body 2. The locking groove 2a is open upward and in the front-rear direction. Of the groove bottom surface of the locking groove 2a, the front part extends straight in the front-rear direction, while the rear part extends downward as it goes backward. The claw portion 36 can move forward over the locking groove 2a by sliding the front edge 36b of the claw portion 36 against the groove bottom surface of the locking groove 2a.

[0041] Next, we will explain how to use the trigger-type liquid dispenser 1 configured as described above. It should be assumed that each part of the trigger-type liquid dispenser 1 is filled with liquid.

[0042] When the trigger section 21 is pulled backward, the piston 22 moves backward, and the inside of the cylinder 23 is pressurized. At this time, the liquid inside the cylinder 23 flows into the upper end of the vertical supply cylinder section 10 through the horizontal communication passage 18, and this liquid presses the switching valve 40 against the valve seat 41, thereby blocking communication between the inside of the cylinder 23 and the inside of the container body A through the horizontal communication passage 18. As a result, the liquid that has flowed into the upper end of the vertical supply cylinder section 10 is supplied to the rear end of the injection cylinder section 30 through the vertical communication passage 19, and when the internal pressure in this section rises and exceeds a predetermined value, the pressure accumulator 31 moves backward while elastically deforming the elastic body 33, thereby creating communication between the inside of the vertical supply cylinder section 10 and the ejection hole 4 through the injection cylinder section 30, and the liquid is ejected from the ejection hole 4.

[0043] When the trigger section 21 is pulled backward, as shown in Figure 4, the connecting portion 15b of the main spring member 15, between the upward-facing upper end surface 15c and the forward-facing front end surface 15d, slides downward against the rear surface 16a of the auxiliary spring member 16, causing the front part of the main spring member 15 to bend backward around the connection portion 15a with the rear part. At this time, the auxiliary spring member 16 bends forward around its lower end. As a result, the main spring member 15 and the auxiliary spring member 16 generate elastic restoring forces in the front-rear direction that are opposite to each other.

[0044] Subsequently, when the trigger unit 21 is returned to its original position forward by the biasing member 5, the piston 22 moves forward within the cylinder 23 in conjunction with the trigger unit 21. At this time, the pressure inside the cylinder 23 is reduced to a level lower than the pressure inside container A, causing the switching valve 40 to move upward away from the valve seat 41. As a result, the liquid inside container A is supplied into the cylinder 23 through the vertical supply cylinder 10 and the horizontal communication passage 18. Here, the switching valve 40, which has moved upward away from the valve seat 41, expands the space surrounded by the multiple elastic protrusions 44 by elastically deforming the multiple elastic protrusions 44 radially outward. When the pressure inside the cylinder 23 is released, the elastic protrusions 44 that were elastically deformed by contact with the switching valve 40 return to their original shape, and the switching valve 40 is pushed back downward. As a result, the switching valve 40 is biased downward and seats on the valve seat 41 without sticking to the inner surface of the vertical supply cylinder 10.

[0045] As described above, in the trigger-type liquid dispenser 1 according to this embodiment, the biasing member 5 that biases the rearward-moved trigger portion 21 forward includes a main spring member 15 and an auxiliary spring member 16. Therefore, when the trigger portion 21 is pulled backward, both the main spring member 15 and the auxiliary spring member 16 undergo elastic deformation, and when the pull on the trigger portion 21 is released, a forward biasing force is applied to the trigger portion 21 from both the main spring member 15 and the auxiliary spring member 16. When the trigger section 21 is pulled backward, the auxiliary spring member 16 comes into contact with the main spring member 15 and undergoes elastic deformation. When the pull on the trigger section 21 is released, the main spring member 15 and the auxiliary spring member 16 suppress each other's restorative deformation, and the forward biasing force exerted on the trigger section 21 is amplified.

[0046] As described above, even without applying a large load to the main spring member 15, it becomes possible to reliably apply a forward biasing force to the trigger part 21 when the traction of the trigger part 21 is released, and the magnitude of the forward biasing force applied to the rearward-moving trigger part 21 can be maintained over a long period of time. By providing the auxiliary spring member 16, even if the main spring member 15 is made lighter and smaller than in the conventional design, it is easy to secure a forward biasing force that can properly return the trigger portion 21 to its front end position.

[0047] When the trigger portion 21 moves backward, the auxiliary spring member 16 comes into contact with the main spring member 15 and deforms forward around its lower end, so that the trigger portion 21 can be moved backward smoothly while both the main spring member 15 and the auxiliary spring member 16 are elastically deformed.

[0048] As the trigger portion 21 moves backward, the main spring member 15 slides against the auxiliary spring member 16 while undergoing elastic deformation. This makes it easy to obtain a configuration in which the auxiliary spring member 16 contacts and elastically deforms the main spring member 15 when the trigger portion 21 moves backward.

[0049] Since the auxiliary spring member 16 only elastically deforms when the trigger portion 21 moves backward, it is possible to prevent the pulling force applied to the trigger portion 21 when moving it backward from becoming excessively large.

[0050] Since the pressure accumulator 31 and elastic body 33 are provided, when the pressure inside the injection cylinder 30 exceeds a predetermined value, it becomes possible to connect the inside of the vertical supply cylinder 10 and the ejection hole 4 through the injection cylinder 30, allowing the liquid to be ejected stably in the desired manner. Since the pressure accumulator 31 is provided inside the injection cylinder 30, the nozzle member 3 can be made smaller and its structure can be simplified compared to the case where the pressure accumulator 31 is provided inside the nozzle member 3. Since the pressure accumulation member 31 is provided inside the injection cylinder 30, the internal volume of the injection cylinder 30 can be reduced without increasing the number of parts. As a result, when the trigger unit 21 is operated, the pressure inside the injection cylinder 30 can be increased quickly, and the number of priming cycles can be reduced. Furthermore, because the internal volume of the injection cylinder 30 is reduced, air is less likely to remain inside the injection cylinder 30, which can suppress variations in the amount of liquid ejected and dripping from the ejection hole 4 caused by residual air. Since the elastic body 33 and the main spring member 15 are formed integrally, the increase in the number of parts can be suppressed.

[0051] Furthermore, the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0052] For example, the pressure accumulator 31, the elastic body 33, and the elastic projection 44 do not need to be provided.

[0053] Furthermore, without departing from the spirit of the present invention, the components in the above embodiments may be replaced with well-known components as appropriate, and the above embodiments and modifications may be combined as appropriate.

[0054] Examples of the present invention are as follows: <1> A sprayer body that is attached to a container body containing liquid, The device comprises a nozzle member attached to the aforementioned ejector body, which has an ejection hole formed therein for ejecting liquid, The aforementioned spray body is, A vertical supply cylinder that draws up the liquid inside the container, It comprises a trigger mechanism having a trigger portion that is movable to the rear, and which causes liquid to flow from the vertical supply cylinder toward the ejection hole when the trigger portion moves to the rear, A biasing member is provided to bias the trigger portion, which has moved backward, toward forward. The biasing member is Main spring members are provided on both sides that sandwich the ejector body in the left-right direction, The trigger portion includes an auxiliary spring member, A trigger-type liquid dispenser in which, when the trigger portion moves backward, the main spring member undergoes elastic deformation, and the auxiliary spring member comes into contact with the main spring member and undergoes elastic deformation. <2> The auxiliary spring member has one end, either the upper or lower end, connected to the trigger portion. When the trigger portion moves backward, the auxiliary spring member comes into contact with the main spring member and deforms by bending forward around one end, <1> The trigger-type liquid dispenser described in [reference]. <3> When the trigger portion moves backward, the main spring member slides against the auxiliary spring member while undergoing elastic deformation. <2> The trigger-type liquid dispenser described in [reference]. <4> The auxiliary spring member elastically deforms only when the trigger portion moves backward. <1> from <3> A trigger-type liquid dispenser as described in one of the following. <5> The aforementioned spray body is, An injection cylinder portion extending forward from the aforementioned vertical supply cylinder portion, The system includes a pressure accumulation member that is disposed within the injection cylinder portion so as to be movable back and forth, and which blocks communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, The pressure accumulating member moves backward when the pressure in the injection cylinder rises, thereby connecting the vertical supply cylinder and the ejection hole through the injection cylinder. A resin elastic body is provided to bias the rearward-moved pressure accumulator forward. The elastic body and the main spring member are integrally formed, <1> from <4> A trigger-type liquid dispenser as described in one of the following. [Explanation of Symbols]

[0055] 1. Trigger-type liquid dispenser 2 Squirt body 3 Nozzle component 4 Spout hole 5. Biasing member 10 Vertical supply cylinder section 15 Main spring component 16 Auxiliary spring member 20 Trigger Mechanism 21 Trigger section 30 Injection cylinder part 31 Pressure Accumulator 33 Elastic body A container

Claims

1. A sprayer body that is attached to a container body containing liquid, The device comprises a nozzle member attached to the aforementioned ejector body, which has an ejection hole formed therein for ejecting liquid, The aforementioned ejector body is A vertical supply cylinder that draws up the liquid inside the container, It comprises a trigger mechanism having a trigger portion that is movable to the rear, and which causes liquid to flow from the vertical supply cylinder towards the ejection hole when the trigger portion moves to the rear, A biasing member is provided to bias the trigger portion, which has moved backward, toward forward. The biasing member is Main spring members are provided on both sides that sandwich the ejector body in the left-right direction, The trigger portion includes an auxiliary spring member, A trigger-type liquid dispenser in which, when the trigger portion moves backward, the main spring member undergoes elastic deformation, and the auxiliary spring member comes into contact with the main spring member and undergoes elastic deformation.

2. The auxiliary spring member has one end, either the upper or lower end, connected to the trigger portion. The trigger-type liquid dispenser according to claim 1, wherein when the trigger portion moves backward, the auxiliary spring member contacts the main spring member and deforms forward around one end.

3. The trigger-type liquid dispenser according to claim 2, wherein when the trigger portion moves backward, the main spring member slides against the auxiliary spring member while undergoing elastic deformation.

4. The trigger-type liquid dispenser according to any one of claims 1 to 3, wherein the auxiliary spring member elastically deforms only when the trigger portion moves backward.

5. The aforementioned ejector body is An injection cylinder portion extending forward from the aforementioned vertical supply cylinder portion, The system includes a pressure accumulation member that is disposed within the injection cylinder portion so as to be movable back and forth, and which blocks communication between the vertical supply cylinder portion and the ejection hole through the injection cylinder portion, The pressure accumulating member moves backward when the pressure in the injection cylinder rises, thereby connecting the vertical supply cylinder and the ejection hole through the injection cylinder. A resin elastic body is provided to bias the rearward-moved pressure accumulator forward. The trigger-type liquid dispenser according to any one of claims 1 to 3, wherein the elastic body and the main spring member are integrally formed.

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